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11-17-2009, 05:30 AM
| #1 |
| Senior Member Join Date: Jul 2009 Location: Phoenix, AZ
Posts: 383
| RCA 40409 & 40410 Transistors
There is a seller on ebay who has these for $39.99 for 10. I've seen these for as much as $15/ea online. These transistors were used in a lot of the old Acoustic control amps, as well as McIntosh & other hifi gear. I bought the 2 sets & they appear to be genuine old stock parts. The leads are oxidized and the cases are dusty. I specifically asked the seller about counterfeiting and he assured me that they are from old stock sources. 1 of my 40409s is bad (tests open on every junction with diode test, ohmmeter & transistor checker). So, 19 out of 20 ain't bad.  Search for RCA 40409 or 40410 on ebay. The seller is jaxele (Jax Electronics). I have no affiliation or interest in this seller. Pix of what I received:
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11-17-2009, 08:52 AM
| #2 |
| Senior Member  Join Date: Jun 2008
Posts: 347
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they're also used for drivers in Heathkit amps
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11-17-2009, 04:50 PM
| #3 |
| Old Timer Join Date: Jun 2007
Posts: 1,253
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And as drivers in a million Kustom amps as well.
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